baber/WOPTO huggingface dataset:
Patent KR-20030055663-A (KR)
Title: Tweezer for moving wafer
Inventor: CHOI JIN U
IPC: H01L21/68
Filed: 2001-12-27
Abstract: PURPOSE: A tweezer for transferring a wafer is provided to chuck easily a wafer by adding a flexible structure to an existing retention portion and forming spontaneously a state of vacuum within a vacuum hole. CONSTITUTION: A tweezer for transferring a wafer includes an absorbing portion(10) and a retention portion(20). The absorbing portion includes a plurality of vacuum holes(30) for absorbing a wafer. The retention portion is connected to one side of the absorbing portion. A spring is mounted in the inside of the retention portion. A flexible bellows is formed on the outside of the retention portion. The inside of the retention portion is connected to the vacuum holes of the absorbing portion. The vacuum holes are formed on a wafer absorbing part of the absorbing portion.
Patent KR-20030058689-A (KR)
Title: An automatic cutter on the surface of tank
Inventor: BANG GI YEONG
IPC: B23D15/00
Filed: 2001-12-31
Abstract: PURPOSE: An automatic cutter for a surface of a tank is provided to increase cutting efficiency, to cut the surface regardless of the diameter of a perforation hole, and to reduce cutting time. CONSTITUTION: In an automatic cutter placed on an outer peripheral surface of a flange(9) formed on a surface of a tank(10) to cut the tank surface, the cutter is composed of a body(1); a first guide roller(3) having a fixing bar(2) at the upside and contacting with a side of the outer peripheral surface of the flange to rotate, and the fixing bar formed at a side of the body; a second guide roller(4) confronting the first guide roller, having a sliding bar(11) slidably formed at other side of the body, and contacting with other side of the outer peripheral surface of the flange to rotate; a torch clamp(6) slidably formed in the middle of the body and combined with a torch(5); and a motor(8) installed at a side of the fixing bar. The motor receives power by being coupled with a battery case(7) which is arranged at the upside of the body and transmits driving force to the first and second guide rollers.
Patent KR-20010083140-A (KR)
IPC: C12N9/99
Filed: 1999-07-22
Abstract: 본 발명은 유로키나제의 활성 억제제를 가지고, 혈관 형성을 감소시키거나 또는 억제하는 신규한 화합물을 제공한다.  이들 화합물은 P1에서 아르기닌 또는 아르기닌 유사 알데히드 또는 아르기닌 케토아미드기를 가진다.  이들 화합물은 체외에서 플라스미노겐 활성화제 수준을 모니터하는데 유용하고, 체내에서 혈관 형성이 병리학상 증상과 관련이 있는 병리학적 질병의 치료 및 유로키나제의 활성을 억제하거나 또는 감소시킴으로써 호전되는 증상의 치료에 유용하다.
Patent KR-20010074784-A (KR)
Title: 공명 패널형 부재를 구비한 라우드스피커 구동 유닛
IPC: H04R31/00
Filed: 1999-07-29
Abstract: 탄력성있는 서스펜션을 몰딩과 동시에 패널형 부재에 고정함으로써 패널형 부재를 위한 탄력성있는 서스펜션을 형성하는 단계를 포함하는 것을 특징으로 하며 굴곡파 에너지에 의해 여기되면 음향 출력을 제공하는 공명 패널형 부재를 구비한 라우드스피커 구동 유닛 형태의 음향 장치를 제조하는 방법을 제공한다.
Patent KR-20010074975-A (KR)
IPC: B29C39/14
Filed: 1999-09-01
Abstract: A process and an apparatus for making a papermaking belt are provided, the belt comprising a reinforcing structure and a resinous framework joined together. The preferred continuous process comprises the steps of depositing a flowable resinous material onto a patterned molding surface; continuously moving the molding surface and the reinforcing structure at a transport velocity such that at least a portion of the reinforcing structure is in a face-to-face relationship with a portion of the molding surface; applying a fluid pressure differential to transfer the flowable resinous material from the molding surface onto the reinforcing structure and causing the flowable resinous material and the reinforcing structure to join together; and solidifying the resinous material thereby forming the resinous framework joined to the reinforcing structure. The apparatus comprises a molding member having a patterned molding surface preferably comprising a plurality of molding pockets to carry a flowable resinous material therein; a means for depositing the flowable resinous material into the molding pockets of the molding surface; a means for moving the reinforcing structure and the molding member in a predetermined direction; and a means for creating a fluid pressure differential sufficient to transfer the flowable resinous material from the molding member to the reinforcing structure.
Patent KR-20010075510-A (KR)
IPC: H05K13/04
Filed: 1999-09-02
Abstract: 연속 머신 프로세스(11, 12)들을 제어하는 종래의 방법에 따르면, 중앙 제어국(1)이 이전의 머신 프로세스들이 상기 중심 제어국(1)에 종료 메세지(6, 8)를 송신한 후에만 개별 제어 유니트(2, 3)들에 시작 명령(5, 7)들을 송신한다.  중앙 제어국(1)이 다른 태스크들로 과부하된 결과, 개별 프로세스 단계(11, 12)들간에 시간 지연(13)이 발생한다.  본 발명에 따른 방법에서, 중앙 제어국(1)은 제 2 머신 프로세스(12)에 대한 제 1 머신 프로세스(11)동안 준비 명령(23, 24) 및 시작 조건을 상기 제 2 제어 유니트(3)에 송신한다.  상기 제 2 머신 프로세스(12)는 상기 제 2 제어 유니트(3)가 상기 제 1 제어 유니트(2)에 의한 시작 조건의 달성을 표시하는 완료 신호(34)를 수신할 때만 시작된다.
Patent KR-20010080604-A (KR)
IPC: G11C7/12
Filed: 2000-09-25
Abstract: 본 발명은 공급 전원으로부터 직접적으로 전류가 흐르지 않고서 사전 충전 프로세스(precharge process)에 이용될 수 있는 기준 전압을 생성하는 사전 충전 회로(a precharge circuit)에 관한 것이다.  본 발명의 바람직한 실시예에서는, 사전 충전 회로는 하나의 버스를 공급 전압으로 사전 충전하고, 다른 버스를 접지 전위로 사전 충전하며, 그런 다음, 각각의 버스가 각각의 공급 및 접지 전위로 용량성으로 충전되는 동안에 버스는 함께 접속된다.  각각의 버스상에 실질적으로 동일한 캐패시턴스를 가정하면, 각각의 버스상의 결과적인 전압은 공급 전압의 반이 될 것이다.  전하 전송(a charge transfer)은 버스의 공급 및 접지 전위로의 사전 충전에 영향을 미치는데, 전력원으로부터 나오는 유일한 전류는 용량성 로드의 스위치(a switch of capacitive loads)와 결합된 과도 전류(transient current)이다.
Patent KR-20010100016-A (KR)
Title: Phthalimidyl azo pigments, method for producing same and utilisation thereof
IPC: D06P1/18
Filed: 1999-12-27
Abstract: The present invention relates to dyes of formulawhereinR is methyl or butyl, R1 is hydrogen, halogen, cyano or nitro, R2 is halogen or cyano, R3 is hydrogen, halogen, C1-C4alkyl or C1-C4alkoxy, R4 is hydrogen, C1-C4alkyl, halogen, CF3 or -NHCOR7 wherein R7 is C1-C4alkyl, R5 is C1-C6alkyl that is unsubstituted or substituted by hydroxy, cyano, acyloxy, or by phenoxy, x being a number from 0 to 4 and it being possible for the alkyl chain, from C2 upwards, optionally to be interrupted by one or more oxygen atoms, or is a radical of formula -CH2CH2-O-COR8, of formula or of formula and R6 is a radical of formula -CH2CH2-O-COR8 or of formula R8 and R9 each independently of the other being C1-C4alkyl and R10 being hydrogen or C1-C4alkyl, or, when R is methyl, R5 and R6 are each independently of the other C1-C4alkyl, with the proviso that when R is n-butyl and R5 and/or R6 is/are a radical of formula -CH2CH2-O-COR8, R4 may not be chlorine or acetylamino,and also to the process for the preparation thereof and to the use thereof in dyeing or printing fibre materials, especially polyester-containing textile materials.
Patent KR-20010092787-A (KR)
IPC: H04M1/02
Filed: 2000-01-20
Abstract: 본 발명은 인쇄 블록(1,22)상에 적어도 하나의 이미지(5)를 도포하는 방법에 관한 것으로, 이미지는 패드로 이동되고, 그 후에 구성 소자, 바람직하게는 이동 전화 커버의 내부 측면상에 패드 인쇄되고, 인쇄 블록(1,22)은 서로에 관하여 각이질 수 있는 측면(8,26)을 포함하고, 상기 이미지는 상기 측면상에 도포된다.
Patent KR-20010102489-A (KR)
IPC: H01L51/50
Filed: 2000-12-18
Abstract: 능동 매트릭스 전기발광 디스플레이(electroluminescent display) 디바이스(2)는 행(6)과 열(8)로 배열된 디스플레이 픽셀(4) 어레이를 포함한다. 각 픽셀(4)은 전류-구동형 전기발광 디스플레이 요소(10)를 포함한다. 픽셀들(4)의 각각의 행(6)은 하나의 공통라인(20)을 공유하며, 한 픽셀 행(6)의 디스플레이 요소(10)를 통하는 전류는 해당 공통라인(20)을 통과한다. 각 공통라인(20)의 폭은 일단부(20a)에서 타단부(20b)까지 점점 좁아지며, 상기 공통라인(20)은 넓은 단부(20a)쪽에서 행 구동회로에 연결된다. 따라서 공통라인의 저항은 행 구동회로에 가까운 공통라인의 단부에서 감소되고, 여기서 행 내의 모든 픽셀들로부터 전류 흐름이 유도된다. 이에 따라 본 발명은 공통라인을 따라 상기 행 내의 픽셀들 사이에 크로스토크를 발생시키는 전압 강하를 감소시킨다.
Patent KR-20020000551-A (KR)
Title: Perfluoroalkylamides, Their Production and Their Use in Diagnosis
IPC: C07D257/02
Filed: 2000-03-15
Abstract: The invention relates to macrocyclic perfluoroalkylamides, the production thereof and the use thereof in diagnostics.
Patent KR-20010110709-A (KR)
IPC: H01L21/3065
Filed: 2000-03-30
Abstract: 본 발명에 따른 장치는 다수의 벽으로 둘러싸인 반도체 처리실을 구비하는 바, 처리실내에서 웨이퍼를 처리하기 위해 필요한 처리가스원도 구비되고, 처리실의 벽들 중 하나에 윈도우가 장착되며, 이 윈도우에 인접하게 입구가 위치되고서 상기 처리실과 연통된 채로 있는데, 상기 입구는 윈도우상에 부산물의 침착을 방지하면서 처리실내에서 웨이퍼를 처리하기 위해 상기 처리실내로 처리가스를 보내는 상기 처리가스원에 연결되어 있는 한편, 다른 실시예에서는 광원과 분석기구 및 광전송매체를 구비하는 바, 이러한 광전송매체는 광원과 분석기구 사이에 연결되고서, 처리실내로 빛을 유도하며 이 처리실의 웨이퍼를 분석하기 위한 윈도우와 정렬되는데, 상기 윈도우는 광전송매체로부터 받아들여진 빛을 임의의 각도로 반사하여 처리실내에서 웨이퍼로부터 반사된 빛을 방해하지 않도록 되어 있다.
Patent KR-20020010680-A (KR)
IPC: F16K31/122
Filed: 2000-06-01
Abstract: 밸브(10)는 개구(11A)를 갖고 있고, 가스 유로의 일부를 이루는 공간을 형성하는 밸브 본체(11)와; 개구(11A)를 개폐하기 위한 제 1 밸브체(12)와; 개구(11A)를 밀폐하는 밀폐 위치와 개구(11A)를 개방하는 개방 위치 사이에서 제 1 밸브체(12)를 이동시키는 구동 기구(40)를 구비하되, 구동 기구(40)는 전후로 구동되는 로드(14)를 갖고 있고, 로드(14)의 단부는 관통 구멍(11B)을 통해 밸브 본체(11) 내로 연장되어 제 1 밸브체(12)에 접속되며, 로드(14)가 전후로 구동됨으로써 제 1 밸브체(12)가 밀폐 위치와 개방 위치 사이에서 이동되고, 또한 관통 구멍(11B)을 거쳐 밸브 본체(11)내로 통하며, 구동 기구(4)측을 밸브 본체에 대하여 기밀하게 차단하는 밀봉 기구(15)와; 로드(14)에 장착되어, 로드(14)의 전후 구동에 수반하여 이동하는 동시에, 제 1 밸브체(12)가 개방 위치 또는 밀폐 위치에 위치될 때 관통 구멍(11B)을 밀폐하여 밀봉 기구(15)를 밸브 본체(11)에 대하여 차단하는 제 2 밸브체(17)를 구비하고 있다.
Patent KR-20030060236-A (KR)
Inventor: KIM SEONG SEOP
IPC: H01J29/02
Filed: 2002-01-07
Abstract: PURPOSE: A cathode ray tube is provided to achieve improved effectiveness of the device by forming a protrusion to the upper coil unit in consideration of the support member and ear of the cabinet structure. CONSTITUTION: A cathode ray tube comprises a first device coil(42) and a second device coil(44) mounted on the upper and lower outer surfaces of a funnel centering from a neck portion, wherein each of the first and second device coils has an upper coil unit disposed in the skirt of the longer side direction of a face panel and a lower coil unit disposed in the neck portion in the longer side direction of the face panel. The upper coil unit is disposed on the explosion proof band arranged, and has a protrusion protruded toward the skirt. The lower coil unit forms a center aperture portion of the inner shield disposed in the rear of the color discrimination device.
Patent KR-20030061062-A (KR)
Title: Pressurizing Cell Culture Chamber
Inventor: SUL DONG GEUN
IPC: C12M1/36
Filed: 2002-01-10
Abstract: PURPOSE: Provided is a pressure type cell culture device in which the carbon dioxide concentration and temperature inside are kept constant despite the pressure higher than atmospheric pressure. And the inside pressure and carbon dioxide concentration are controllable independently, making various experimental conditions possible. CONSTITUTION: A pressure type cell culture device comprises: a compressor(40) to make air pressure; a warm water tank(42) to keep the pressured air to constant temperature; a pressure type tank(44) which is connected to the warm water tank(42) and holds a certain interior pressure; a culture tank(10) which contains culturing cells and has open/close door(12) at a side; a pressure control valve(46) located between the culture tank and the pressure type tank(44), controlling the pressure of the air coming in from the culture tank; a temperature sensor(60), a pressure sensor(16) and a carbon dioxide sensor(20) which are located on the culture tank(10) and detect temperature, pressure and carbon dioxide concentration in the culture tank(10); at least one bomb(50) which keeps the concentrated carbon dioxide; a carbon dioxide control valve(22) controlling carbon dioxide coming into the culture tank(10) from the carbon dioxide bomb(50), being located between the carbon dioxide bomb(50) and the culture tank(10); and a controller which controls and operates the pressure control valve(46), temperature and the carbon dioxide control valve(22) of the culture tank(10) according to the set and read data of the air pressure and carbon dioxide concentration.
Patent KR-20020029874-A (KR)
Title: continuity-detecting process and device for human bady
Inventor: KIM JEA YOUNG
IPC: H05B37/02
Filed: 2002-01-10
Abstract: PURPOSE: A method and apparatus for continuous sensing of human body is provided to prevent theft by continuously sensing the human body when the human body moves or stops within the sensing range. CONSTITUTION: A human body sensor(14) is fixed to a boss(8) of a fixing bracket(7), and the fixing bracket is fixed to a board(1) through a screw(9). A rotor(10) having a slave gear(11) is fitted in a rotatable manner to the boss, and a lens(12) having a prism surface(13) is fixed to the rotor. A deceleration motor(2) is fixed to the board through a screw(4), and a prime gear(5) having a support disk(6) is fixed to a shaft(3) of the deceleration motor. Thus, the prime gear and the slave gear are engaged with each other, and the support disk supports the lower portion of the slave gear. The human body sensor is maintained at the fixed state, while the lens having the prism surface is rotated, to thereby refract the energy value which is emitted from the human body moving or stopped and incident to the human body sensor.
Patent KR-20030060664-A (KR)
Title: An Ornanmental Rotating Device
Inventor: CHOI SEUNG PAL
IPC: B44C3/00
Filed: 2002-01-10
Abstract: PURPOSE: Provided is a rotation apparatus for decoration which fixes plural decorations at an external side of a decoration axis, rotating at low speed so that it contributes to maximize the indoor decoration effect. CONSTITUTION: The rotation apparatus for decoration is characterized by comprising the parts of: a support sheet(1) which includes a motor(11) with a drive axis(12) and a switch; a transparent body(2) which is fixed at the upper side of the support sheet with a reinforcing rim(21), forming a support axis(22) at the upper center; a decoration axis(3) which consists of a connection hole(31) and a support hole(32) matched to the drive axis and the support axis respectively; and decorations(4) which are aligned on a plane of the decoration axis at regular intervals.
Patent KR-20030062641-A (KR)
Title: A method for forming via hole of semiconductor device
Inventor: CHO SEONG YUN
IPC: H01L21/28
Filed: 2002-01-18
Abstract: PURPOSE: A method for forming a via hole of a semiconductor device is provided to prevent generation of insulation material by minimizing the loss by increasing the thickness of anti-reflective coating(ARC), thereby reducing a contact resistance. CONSTITUTION: A lower metal line(101a) and ARC(102) are sequentially formed on a semiconductor substrate(100). An interlayer dielectric(103) is formed on the ARC. By using the interlayer dielectric as an etching mask and a base as CHF/CF/AR gas, the first etching process is performed. By using a base as SF/Ar gas, the second etching process is performed to form a via hole. A barrier metal layer(106) and upper metal line(107) are formed on the resultant.
Patent KR-20030065009-A (KR)
Title: Thin film for optical applications, light-emitting structure using the same and the fabrication method thereof
Inventor: HAN HAK SEUNG
IPC: B82Y20/00
Filed: 2002-01-29
Abstract: PURPOSE: A thin film for optical device, and light emitting structure using the same and fabrication method thereof are provided which has a size of silicon nano crystal and its density and density of rare-earth elements. CONSTITUTION: A nano crystal silicon and a rare-earth element are doped to a silica or a silica thin film at the same time. An average size of the above silicon nano crystals is below 3 nm, and a density of the above rare-earth element is below 0.1 at.%. And a ratio of the rare-earth element density to the silicon nano crystal density is controlled to be within 1 and 10. And the thin film for an optical device performs a light emission by exciting the above rare-earth element by intermediating electron-hole combination in the above silicon nano crystal.
Patent KR-20030065234-A (KR)
Title: Transmission line of W-LAN
Inventor: BYUN SANG CHEOL
IPC: H04L12/28
Filed: 2002-01-31
Abstract: PURPOSE: A transmitting apparatus for a wireless LAN(Local Area Network) is provided to reduce cost according to the construction of a transmission line by adding an optical repeater signal and a wireless LAN signal and transmitting the added signal, through a WDM(Wavelength Division Multiplex) technique, for constructing a wireless LAN service network by a previously constructed optical line for an optical repeater. CONSTITUTION: The first optical signal multiplexing device(50) connects to an optical line(40) and an IP(Internet Protocol) backbone(70) at a communication port of an optical repeater donor(20), and transmits and receives an optical signal of the optical repeater donor(20) and a wireless LAN signal to each line. The second optical signal multiplexing device connects to the optical line(40) and an access point(80) at a communication port of an optical repeater remote(30), and transmits and receives an optical signal of the optical repeater remote(30) and the wireless LAN signal to each line.
Patent KR-20030067132-A (KR)
Title: Deflection yoke
Inventor: LEE YEONG UK
IPC: H01J31/12
Filed: 2002-02-07
Abstract: PURPOSE: A horizontal deflection voltage device is provided to reduce a horizontal mis-convergence and mis-landing by preventing pulse noises and distortions. CONSTITUTION: An image display device comprises an electron source, a lead-out electrode, a signal electrode, a focus electrode and a deflection electrode arranged in a vacuum container. The electron beam passed through one through hole from among a plurality of through holes formed at the lead-out electrode corresponds to a certain area of the total screen by the deflection electrode. The horizontal deflection direction of electron beams in the unit cell of the screen in an even-numbered line is opposite from the horizontal deflection direction of electron beams in the unit cell of the screen in an odd-numbered line.
Patent KR-20030068852-A (KR)
Title: Photo-diode and method for fabricating therefor
Inventor: KANG HWA YEONG
IPC: H01L31/062
Filed: 2002-02-18
Abstract: PURPOSE: A photodiode is provided to uniformly maintain capacitance of a chip and increase a real light absorption area by making the surface of an active region of a convex lens type so that an effective light receiving area is broadened on a second-dimensional plane as compared with a predetermined active area. CONSTITUTION: A substrate(1) is prepared. A buffer layer(2) and a light absorption layer(3) are sequentially stacked on the substrate. An epitaxy layer(4) is formed on the light absorption layer, having the active region whose surface is of a convex lens type. An insulation layer(5) is formed on the epitaxy layer except the active region. The first metal electrode(7) is formed on the insulation layer. The second metal electrode(10) is formed on the bottom of the substrate.
Patent KR-20030069640-A (KR)
Title: System and method for geting information on hierarchical and conceptual clustering
Inventor: LEE UI BUM
IPC: G06F17/30
Filed: 2002-02-22
Abstract: PURPOSE: A system for searching information by a hierarchical and conceptual clustering and a method thereof are provided to classify and search information easily without an additional search learning by displaying an information search result grouped by notes when a web page information search based on a word or a sentence is requested through a web search CGI being supplied in a web server system. CONSTITUTION: A web server(110) receives search request information received from a computer terminal of a service user connected to the Internet and transmits classification information searched through many devices being interlocked at an Internet connection state to the computer terminal. A cluster search engine(120) receives the search request information received from the web server(110) according to individual words or morphemes and classifies/searches many web pages(300) by a received search word. A filtering database(140) classifies and sorts HTML document information or web page grouped and combined by a clustering of the cluster search engine(120). A note generator(150) creates a proper classification name to a corresponding information group sorted in the filtering database(140) and executes a tree-shaped arrangement.
Patent KR-20020070879-A (KR)
Title: Drinking straw attachment device and method
Inventor: KRAFT EBERHARD
IPC: B65D77/28
Filed: 2002-02-28
Abstract: PURPOSE: A drinking straw attachment device and method are provided to reduce the generation of cementation of a drinking straw band. CONSTITUTION: A drinking straw attachment device attaching drinking straws(4) to beverage containers is supplied in the form of a drinking straw band(6) provided with a glue layer(8). The device has a recess(24) at the point where a cutting device severs two drinking straws from each other corresponding to the height of the glue layer and the extended section of the height is wider than the glue layer. In additional, a method for attaching drinking straws to beverage containers includes the drinking straw band is cut into pieces between each of the two drinking straws with the cutting device of a device part, the cutting device pierces through the glue layer and the drinking straw band inside the recess provided on the device in a height position corresponding to the glue layer, and the height extended part of the recess is wider than the width of the glue band.
Patent KR-20020072204-A (KR)
Inventor: ABE TOSHIHIRO
IPC: B29C53/80
Filed: 2002-03-07
Abstract: PURPOSE: To provide an apparatus and a method for detecting a sealing contact pressure, correcting and sealing a superposed part of a film when the superposed part of the film is sealed. CONSTITUTION: The method for detecting the sealing contact pressure, correcting and sealing comprises the steps of supplying an energy from a movable member to the superposed part F1 of the film F made of a plastic while contact pressurizing the superposed part F1 between a pair sealing members with a fixed member 3 and the movable member 4, and sealing the superposed part F1. In this case, the movable member is movable in a direction of the fixed member and is variable at the contacting pressure. The movable member has a contact pressure detecting element 8. The element 8 is connected to a means for outputting a display signal of a difference between the detected contacting pressure and a preset predetermined contacting pressure by comparing the contacting pressures with each other.
Patent KR-20030073676-A (KR)
Title: Cooling system for fuel cell
Inventor: HUH SEONG GEUN
IPC: E04B1/24
Filed: 2002-03-12
Abstract: PURPOSE: Provided is a cooling system of a fuel cell, which always keeps the temperature of a fuel cell stack proper by cooling and can reuse cooling water for heating and hot water. CONSTITUTION: The cooling system of the fuel cell comprises: the fuel cell stack(10); a first heat-recovering part(20) which absorbs heat generated from the fuel cell stack(10); an air supply part(30) supplying cool air to the first heat-recovering part(20), which is connected to the inlet of the first heat-recovering part(20); an air exhaust part(40) discharging the heat of hot air, which is connected to the outlet of the first heat-recovering part(20); a second heat-recovering part(50) which absorbs heat from exhaust gas passing through the air exhaust part(40); a water supply part(60) supplying water to the second heat-recovering part(50); a hot water storing part(70) having a water level sensor(L), which is connected to the outlet of the second heat-recovering part(50) and stores water warmed by cooling the air of the first heat-recovering part(20); a part for sensing the temperature of the fuel cell stack(10); a control part(80) controlling whether to open an air supply valve and a water supply valve(63) or close.